/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.iotdb.db.it.aggregation;

import org.apache.iotdb.it.env.ConfigFactory;
import org.apache.iotdb.it.env.EnvFactory;
import org.apache.iotdb.it.framework.IoTDBTestRunner;
import org.apache.iotdb.itbase.category.ClusterIT;
import org.apache.iotdb.itbase.category.LocalStandaloneIT;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import org.junit.runner.RunWith;

import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

import static org.apache.iotdb.db.constant.TestConstant.count;
import static org.junit.Assert.assertEquals;

@RunWith(IoTDBTestRunner.class)
@Category({LocalStandaloneIT.class, ClusterIT.class})
public class IoTDBAggregationDeleteIT {

    private static String[] dataSet =
            new String[]{
                    "INSERT INTO root.turbine.d1(timestamp,s1) values(1,1)",
                    "INSERT INTO root.turbine.d1(timestamp,s1) values(2,2)",
                    "INSERT INTO root.turbine.d1(timestamp,s1) values(3,3)",
                    "INSERT INTO root.turbine.d1(timestamp,s1) values(4,4)",
                    "INSERT INTO root.turbine.d1(timestamp,s1) values(5,5)",
                    "flush",
                    "delete from root.turbine.d1.s1 where time < 3"
            };
    private long prevPartitionInterval;

    @Before
    public void setUp() throws Exception {
        prevPartitionInterval = ConfigFactory.getConfig().getPartitionInterval();
        ConfigFactory.getConfig().setPartitionInterval(1000);
        EnvFactory.getEnv().initBeforeTest();
        prepareData();
    }

    @After
    public void tearDown() throws Exception {
        EnvFactory.getEnv().cleanAfterTest();
        ConfigFactory.getConfig().setPartitionInterval(prevPartitionInterval);
    }

    @Test
    public void countAfterDeleteTest() throws SQLException {
        try (Connection connection = EnvFactory.getEnv().getConnection();
             Statement statement = connection.createStatement()) {

            int cnt = 0;
            try (ResultSet resultSet = statement.executeQuery("select count(**) from root")) {
                while (resultSet.next()) {
                    assertEquals("3", resultSet.getString(count("root.turbine.d1.s1")));
                    cnt++;
                }
                assertEquals(1, cnt);
            }
        }
    }

    private void prepareData() throws SQLException {
        try (Connection connection = EnvFactory.getEnv().getConnection();
             Statement statement = connection.createStatement()) {

            for (String sql : dataSet) {
                statement.execute(sql);
            }
        }
    }
}
